"Go for it Susan Boyle! Good luck on Saturday." writes the 38-year-old royal , referring to the Britain's Got Talent final on May 30.

The queen also jokes that she's considering dressing up as the middle-aged church worker to go incognito among her people, as her husband King Abdullah is reported to have done this week to inspect services at a health ministry centre in Amman.

"Thinking of playng dress up and trying this out. If you hear of a Susan Boyle sighting in Amman...well, you know who it is," she added

So what's the story with Twitter…? In case you haven't already discovered it, Twitter is a free social networking service which enables users to send and read other users' messages. These 'tweets' are displayed on the user's profile page and delivered to other users who have subscribed to them. Since it launched in 2006, the service has become a hit with celebs. Check out hellomagazine.com's celebrity Twitter page